SPACE INDEX COMPANIES INSIGHTS SECTORS PRODUCTS NEWS BLOG ANSWERS RESEARCH ABOUT FOR COMPANIES BUILD / 2026.06.04
Apex logo Apex Designs and mass-manufactures standardized satellite bus platforms for commercial and government constellation deployments across LEO, MEO, and GEO orbits vs Sierra Space Designs and manufactures satellite platforms, reusable spaceplanes, expandable habitats, and propulsion systems for national security and civil space Sierra Space logo
HEAD-TO-HEAD1 shared sector
Apex Sierra Space
Founded 2022 2021
Headquarters Los Angeles, California Louisville, Colorado
Type private private
Status operating operating
Employees 234 1,072
Total funding $522M $2.2B
Latest round Series D Series C
Sectors Satellite Manufacturing, Satellite Components & Subsystems Satellite Manufacturing, Space Propulsion, Space Stations & Habitats
Products listed 3 7
Federal contracts 1 ($22.0M) 1 ($6.5M)
Launches
Leaders listed Ian Cinnamon, Max Benassi, Adam Corey Dan Jablonsky, Janet Kavandi, Troy Lahr
News mentions 0 0
SHARED SECTORS
FREQUENTLY ASKED

How do Apex and Sierra Space compare?

Both companies work in Satellite Manufacturing. Apex was founded in 2022 and Sierra Space in 2021.

Which is larger, Apex or Sierra Space?

Sierra Space reports the larger workforce, with 1,072 employees versus 234.

Which has more US federal contracts, Apex or Sierra Space?

Apex has been awarded more, with $22.0M across 1 awards.

Numbers refresh on every render against the live Space Index database. Federal contract data from USAspending.gov; launches from LaunchLibrary2.